Quality standard:USP, AJI
CAS No.: 52-89-1
Kosher:¡Ì
Halal:¡Ì
Class:
Chemical Name: L-Cysteine hydrochloride hydrate
Structure Formula:
Molecular Formula: C3H7NO2S.HCl
Molecular Weight: 157.6147
Cas No: [52-89-1]
Characteristics: White crystals or crystalline powder; strongly acid taste.
Quality Standards: USP, AJI.
Item | Specifications | ||
USP | AJI | ||
Appearance | White crystals or crystalline powder; strongly acid taste. |
||
Identification | Infrared Absorption | - - - | |
Specific optical rotation | +5.6 °- +8.9 ° | +5.6 °- +8.9 ° | |
State of solution (Transmittance ) |
- - - | ≥ 98.0% clear and colorless |
|
Sulfate | ≤ 0. 03 % | - - - | |
Iron | ≤ 0. 003 % | - - - | |
Heavy Metals (as Pb), | ≤ 0.00 15% | ≤ 10ppm | |
Arsenic (as As), | - - - | ≤ 1ppm | |
Other amino acids | - - - | Not detected | |
Organic volatile impurities | Meets the requirement | - - - | |
Loss on drying, | ≤ 1 % | ≤ 1 % | |
Residue on ignition, | c | ≤ 0.1% | |
Assay | 98.5-101.5 % | 9 8 .0-10 2 % | |
pH value | - - - | 1.5 - 2.0 | |
Organic volatile impurities | Meets the requirement | - - - | |
Chromatographic purity | 0.5% max Individual impurity, 2% max total | - - - |
Packaging and Storage: In 25kgs f iber drum double polyethylene bags inside; Preserve in well- closed containers, at controlled room temperature.
Recommended limit: 2 year.